DXGI Interfaces
The DirectX Graphics Infrastructure (DXGI) provides a set of interfaces that enable applications to interact with graphics hardware and display adapters. These interfaces abstract low-level details, allowing for more consistent and robust graphics programming across different hardware and driver versions.
Key DXGI Interfaces
Below is a list of some of the most important DXGI interfaces and their primary roles:
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IDXGIFactory: The entry point for DXGI. It allows enumeration of adapters and output surfaces, and creation of DXGI objects. -
IDXGIAdapter: Represents a graphics adapter (GPU) in the system. It provides information about the adapter's capabilities and allows for enumeration of its outputs. -
IDXGIOutput: Represents a display output connected to an adapter. It allows for querying display modes, monitor information, and managing full-screen transitions. -
IDXGISwapChain: Manages the presentation of rendered frames to the screen. It handles buffer flipping and V-Sync. -
IDXGIDevice: Represents a DXGI device, which is typically derived from a Direct3D device. It provides access to low-level DXGI functionality associated with that device. -
IDXGIResource: A base interface for DXGI objects that represent resources like textures and buffers.
Interface Hierarchy and Relationships
DXGI interfaces often form a hierarchical structure. For example, you typically start with an IDXGIFactory to enumerate IDXGIAdapter objects, and from each adapter, you can enumerate IDXGIOutput objects. A IDXGISwapChain is usually created via the IDXGIFactory and is associated with an IDXGIDevice.
Further Reading
- DirectX Graphics Infrastructure (DXGI) Overview
- IDXGIFactory Interface
- IDXGIAdapter Interface
- IDXGISwapChain Interface
Understanding these interfaces is fundamental to leveraging the full power of DirectX for graphics development on Windows.